Building breathing type fresh air device and ventilation system

The building breathing type fresh air device comprises an air bellow, an air baffle arranged in the air bellow, an energy storage body installed below the air baffle and a heat exchange plate installed on the side face of the energy storage body, and a fresh air opening is formed in the upper end of the outer side of the air bellow; a building breathing type fresh air ventilation system comprises a building breathing type fresh air device and further comprises a condenser, a compressor and a throttling valve, an energy storage body adopts a surface air cooler, and heat pump circulation is formed by the energy storage body, the compressor, the condenser and the throttling valve. The fan feeds indoor air with higher temperature into the air duct for heat exchange with the energy storage filaments and then discharges the indoor air out of the room, and through'one-time exhalation and one-time exhalation ', the device realizes recycling of heat energy of indoor air exhaust, fresh air is preheated, the energy cons